feat(cat-voices): add constants and URL parsing for supported wallets…

… in registration panel. Launching url in new tab (#1127)

Co-authored-by: Dominik Toton <166132265+dtscalac@users.noreply.github.com>

catalyst_voices/apps/voices/lib/common/constants/constants.dart

@@ -0,0 +1,5 @@
+abstract class VoicesConstants {
+  /// External urls
+  static const String supportedWalletsUrl =
+      'https://docs.projectcatalyst.io/current-fund/voter-registration/supported-wallets';
+}

catalyst_voices/apps/voices/lib/common/ext/string_ext.dart

@@ -7,3 +7,9 @@ extension StringExt on String {
     }
   }
 }
+
+extension UrlParser on String {
+  Uri getUri() {
+    return Uri.parse(this);
+  }
+}

catalyst_voices/apps/voices/lib/pages/registration/wallet_link/stage/select_wallet_panel.dart

@@ -1,5 +1,7 @@
 import 'dart:async';
 
+import 'package:catalyst_voices/common/constants/constants.dart';
+import 'package:catalyst_voices/common/ext/string_ext.dart';
 import 'package:catalyst_voices/pages/registration/wallet_link/bloc_wallet_link_builder.dart';
 import 'package:catalyst_voices/pages/registration/widgets/registration_stage_message.dart';
 import 'package:catalyst_voices/widgets/common/infrastructure/voices_result_builder.dart';
@@ -11,6 +13,7 @@ import 'package:catalyst_voices_models/catalyst_voices_models.dart';
 import 'package:catalyst_voices_shared/catalyst_voices_shared.dart';
 import 'package:flutter/material.dart';
 import 'package:result_type/result_type.dart';
+import 'package:url_launcher/url_launcher.dart';
 
 /// Callback called when a [wallet] is selected.
 typedef _OnSelectWallet = Future<void> Function(WalletMetadata wallet);
@@ -57,7 +60,7 @@ class _SelectWalletPanelState extends State<SelectWalletPanel> {
         const SizedBox(height: 10),
         VoicesTextButton(
           trailing: VoicesAssets.icons.externalLink.buildIcon(),
-          onTap: () {},
+          onTap: () async => _launchSupportedWalletsLink(),
           child: Text(context.l10n.seeAllSupportedWallets),
         ),
       ],
@@ -76,6 +79,13 @@ class _SelectWalletPanelState extends State<SelectWalletPanel> {
       registration.nextStep();
     }
   }
+
+  Future<void> _launchSupportedWalletsLink() async {
+    final url = VoicesConstants.supportedWalletsUrl.getUri();
+    if (!await launchUrl(url)) {
+      throw Exception('Could not launch $url');
+    }
+  }
 }
 
 class _BlocWallets extends StatelessWidget {